I have a Deltec 600S Calcium Reactor. I was wondering if anyone has replaced the Aquabee 3000 with any other pump. I was told they have metric fittings and wouldn't be able to find the correct fittings to convert it to something different. I'd really like to install an external pump as I really hate this Aquabee. It's worth about as much to me as any other submersible pump, which amounts to nothing. I've had to replace it once already, and it's running very loud for the past couple of days. This was partly my own fault because I wasn't cleaning it enough(I was cleaning it every 3-4 mos), but an external like a small little giant or something similiar would be a much better pump. I'm afraid I'm in for more problems soon. Before anyone asks, I've been cleaning the pump with the recommended solution from Deltec every 6-8 weeks. The last time I took it apart, one of the rubber grommets that hold the impeller shaft in place had a hole burned right through it. Any idea where I might be able to find metric to standard U.S. measurement pvc fittings. Any help wopuld be greatly appreciated. TIA. You'd think an expensive reactor like this would come with a better pump.